ASTM D 3923 : 2008
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Practices for Detecting Leaks in Reverse Osmosis and Nanofiltration Devices
Hardcopy , PDF
11-11-2014
English
01-10-2008
Important note : All end users must be registered with an Account prior to user licenses being assigned.CONTAINED IN VOL. 11.02, 2017 Defines detecting leaks in which there is a direct communication between the feed or concentrate, or both, and the permeate.
| Committee |
D 19
|
| DocumentType |
Standard Practice
|
| Pages |
3
|
| ProductNote |
Reconfirmed 2008
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
1.1 These practices cover detecting leaks in which there is a direct communication between the feed or concentrate, or both, and the permeate. Several types of leaks are possible with the various configurations of reverse-osmosis (RO) and nanofiltration (NF) devices.
1.2 Types of Leaks:
1.2.1 With hollow-fiber devices, feed or concentrate leakage, or both, into the permeate stream by leaks through the tube sheet and past the tube sheet O-ring are possible. “Leaks” caused by broken fibers are not covered by these practices.
1.2.2 With spiral-wound devices, leaks may occur through damage of the membrane surface itself by punctures or scratches, by glue-line failure, and by O-ring leaks on product tube interconnectors.
1.2.3 With tubular devices, leaks due to membrane damage, tube end seal leaks, and leaks from broken tubes or product headers are possible.
1.3 Three leak test practices are given as follows:
| Sections | |
| Practice A—Tube Sheet and O-Ring Leak Test for Hollow Fiber Devices | 8 to 9 |
| Practice B—Vacuum Test for Spiral Wound Devices | 10 to 12 |
| Practice C—Dye Test for Spiral Wound and Tubular Devices | 13 to 18 |
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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